如何使用ISERDESE3实现10：1并行到串行转换？

奥斯威德只能在超大规模/超大规模的8：1 ddr +你需要在你的结构中使用某种齿轮箱来取10位字并使它们成为8位
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-----------------------不要忘记回答，kudo，并接受为解决方案.-------------
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在原帖中查看解决方案



以下为原文

The oserdes only does 8:1 ddr in ultrascale/ultrascale+
You will need some sort of gear box in your fabric to take 10 bit words and make them 8 bits-------------------------------------------------------------------------
Don’t forget to reply, kudo, and accept as solution.
-------------------------------------------------------------------------View solution in original post

奥斯威德只能在超大规模/超大规模的8：1 ddr +你需要在你的结构中使用某种齿轮箱来取10位字并使它们成为8位
--------------------------------------------------
-----------------------不要忘记回答，kudo，并接受为解决方案.-------------
--------------------------------------------------
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以下为原文

The oserdes only does 8:1 ddr in ultrascale/ultrascale+
You will need some sort of gear box in your fabric to take 10 bit words and make them 8 bits-------------------------------------------------------------------------
Don’t forget to reply, kudo, and accept as solution.
-------------------------------------------------------------------------

尝试使用40位输入和8位输出的变速箱组件：
https://github.com/VLSI-EDA/PoC/blob/master/src/misc/gearbox/gearbox_down_dc.vhdl
这将需要MMCM / PLL提供3个时钟，周期比为1：8：40
不要忘记通过接受帖子作为解决方案来尽可能地关闭线程。



以下为原文

Try this gearbox component, with a 40 bit input, and 8 bit output:
 
https://github.com/VLSI-EDA/PoC/blob/master/src/misc/gearbox/gearbox_down_dc.vhdl
 
This will require an MMCM/PLL to provide 3 clocks, with period ratios of  1:8:40 
Don't forget to close a thread when possible by accepting a post as a solution.

谢谢！



以下为原文

Thanks!

我需要将10位转换为8位。
谢谢你们！



以下为原文

I need to convert 10 bit to 8 bit. Thanks all the same!

你没有因为树木而看到森林...拿你的10位数据流...比如100 MHz ......这是1 Gbit / sec
现在将100 MHz的10位转换为25 MHz的40位..再次使用从属时钟变速箱..
现在将25 MHz的40位转换为125 MHz的8位。
你仍然有1 Gbit / sec ..然后运行8位到OSERDESE3你已经完成.. 1 Gbit / s输出..
你需要的时钟：
100 MHz，25 MHz，125 MHz和500 MHz。
单个MMCM可以做到这一点，VCO运行在1500 MHz。
然后MMCM中的分隔符是15,60,12和3.完成。
QED。
不要忘记通过接受帖子作为解决方案来尽可能地关闭线程。



以下为原文

you aren't seeing the forest because of the trees...      Take your 10 bit data stream... say at 100 MHz..  which is 1 Gbit/sec
 
Now convert from 10 bits at 100 MHz to 40 bits at 25 MHz..    again using a dependent clock gearbox..   
 
Now convert 40 bits at 25 MHz to 8 bits at 125 MHz.    Still you have 1 Gbit/sec..  then run the 8 bits to the OSERDESE3 and you are done..  1 Gbit/s output..
 
Clocks you will need:
 
100 MHz, 25 MHz, 125 MHz, and 500 MHz.      A single MMCM can do this, with the VCO running at 1500 MHz.
Then the dividers in the MMCM are 15, 60, 12, and 3.     Done.
 
QED.
Don't forget to close a thread when possible by accepting a post as a solution.